Engine



Jan 23, 1945- E. GINN ET AL ENGINE 2 Shets-Shet 1 Original Filed July 22, 1942 ,Z r? 3?" 7/m'07d Jae/re 60956707017 1 VENTORS fiftorweq,

Jan, 23, 1945. E. GlNN ET AL ENGINE Original Filed July 22, 1942 2 Sheets-Sheet 2 Ear? 6/00 /4 '07aZ le Z'e (55.9 eYma/J Patented Jan. 23, 1945 1 2,368,080 ENGINE Earl Ginn, North Muskegon, and HaroldLeslie Casselman, Muskegon, Mich, assignors to Continental Motors Corporation, Muskegon, Mich, a corporation of Virginia Original application July 22, 1942, Serial No. 451,830. Divided and this application June 17, 1943, Serial No. 491,112

Claims.

This invention relates to engines and more particularly to the cooling system associated therewith, and is a division of our application for patent, Ser. No. 451,830, filed July 22, 1942, for Engines.

In internal combustion engines, more particularly heavy duty engines of the inline type, efficient cooling of the engine is an important factor to be considered, as the maximum power output of such engines is had only when the engine is sufiiciently cooled to efficiently dissipate the heat of the products of combustion.

t is an object of this invention to construct a heavy duty internal combustion engine of improved construction, by providing a novel cooling system which supplies a coolant to all the engine parts in such a way as to most efficiently dissipate the heat of the products of combustion and thereby facilitate eflicient engine performance.

A further objectof this invention is to construct an improved cooling system for heavy duty engines, by providing a coolant distributing manifold structure which uniformly distributes a coolant to the engine and which is more particularly constructed for an engine of the type having a divided cylinder head structure.

For a more detailed understanding of the invention reference may be had to the accompanying drawings illustrating the invention in detail in which like parts throughout the several views are indicated by like reference characters and in which:

Fig. 1 is a side elevational view of an internal combustion engine equipped with an improved coolant distributing manifold,

Fig. 2 is a plan view of the coolant mani fold structure,

Fig. 3 is a plan sectional view of the coolant manifold structure,

Fig. 4 is a transverse sectional detail view taken on the line 4-4 of Fig. 3, and

Fig. 5 is a transverse sectional detail view taken on the line 5-5 of Fig. 3.

The present invention is illustrated preferably as embodied in a heavy duty internal combustion engine [0 of the type, having a cylinder block H and a divided cylinder'head structure comprising front and rear jacketed cylinder head structures l2 and I 3, although it will be apparent that the principles of the present invention may be advantageously employed with other types of engines as well. The cylinder head structures I2 and is are respectively provided with coolant jackets 52a and I to while the engine cylinder block H is provided with a coolant jacket Ila, said coolant jackets being preferably connected by suitable coolant ports 14 as shown in Fig. 2.

A coolant manifold structure is constructed for substantially uniformly supplying a coolant.

to all parts of'the engine structure, which are to be cooled, and this coolant manifold structure 15 referably extends longitudinally of the engine alongside of the cylinder head structures 12 and I3. A coolant pump l6 of conventional construction is preferably secured to the forward part of the engine and preferably supported by the front cylinder head structure I2 as shown in Fig. 1, said coolant pump being driven in any suitable manner preferably by means of a driving belt I! drivingly connected with the engine crankshaft (not shown). The pump outlet consists of an extension or elbow it which may be fastened or secured to the forward end of the manifold structure [5 in any suitable manner, and it will be thus noted that this pum supplies a coolant to the manifold structure under pressure.

The coolant manifold structure l5 comprises in general a longitudinal coolant conducting portion 20 which is constructed with a progressively decreasing cross-sectional area and is preferably provided with a pair of outlets 2| connected with the cylinder head structure l2 and a pair of outlets 22 connected with the cylinder head structure I3, these outlets extending laterally and directly connected with the cylinder head coolant inlet ports I21) and 13b respectively.

It will thus be observed that the coolant manifold structure thus carries the coolant to both cylinder head structures where same is circulated through the cylinder head jackets [2a and Ba and thence through the cylinder jacket Ila, from whence the coolant is returned in the usual manner to the radiator (not shown) connected with said coolant um inlet. It will be observed that the construction of the coolant conducting runner 2D with progressivelydecreasing cross-sectional area insures a uniform distribution of the coolant so that the rear cylinder head structure l3 obtains substantially the same amount of coolant at approximately the same pressure as does the front cylinder head structure l2.

An oil cooler structure 25 is secured by suitable bolts or other fastening devices 26 to the cylinder structure II, and it will be noted that this oil cooler is located in proximity to the coolant manifold structures, and carries a coolant inlet 27 located substantially beneath the coolant manifold I 5. Said coolant, manifold is provided with a coolant outlet 28 consisting of a downwardly extending elbow 29 directly connected by any suitable water tight connection 30 with the oil cooler inlet connection 21. The engine lubricating oil is circulated through the heat exchange device 3| contained within the oil cooler housing 32, said housing providing a coolant jacket 33 around the heat exchange device 3l. The lubricating oil is fed to the heat exchange device 3| from the lubricating oil duct 34 by reason of the oil cooler inlet passages 35 and 36 and is discharged through the outlet passages 31 and 38 to the oil line or duct 39. The oil coolant jacket 33 is open to the discharge port 45 in the cylinder block, and thu the coolant which is circulated through the oil cooler is discharged through this outlet port 45 into the cylinder jacket Ila.

It will be observed that the location of the oil cooler which is directly connected with the coolant manifold structure is located to receive a predetermined flow of coolant, and to not disturb the uniform distribution of the coolant to the cylinder head structures. The coolant outlet 28 opening into the outlet connection 29 is located intermediate the coolant manifold outlets 22.

It will thus be observed that the above described cooling system provides for a distribution of coolant to all engine parts which are to be cooled to dissipate the heat from the products of combustion, and serves also to distribute a predetermined adequate supply of coolant to an oil cooler structure which is directly connected to the engine by suitable means which directly connect the oil cooler coolant jacket with the coolant manifold structure.

Although there is illustrated but one preferred form of the invention in the accompanying drawings and described in detail in the accompanying specifications, it will be apparent to those skilled in the art to which this invention pertains that various modifications and changes may be made therein without departing from the spirit of the invention or from the scope of the appended claims.

We claim:

1. In an inline internal combustion engine,

having a jacketed cylinder structure, longitudinally aligned, non-interconnected jacketed cylinder head structures secured to the cylinder structure, and having coolant outlet ports connected with cylinder coolant inlet ports, a coolant supply system for said engine comprising a liquid coolant manifold extending longitudinally of the engine and secured above the plane of the top longitudinal face of the cylinder structure and alongside the cylinder head structures, said coolant manifold having coolant outlet ports respectively openly connected directly to each of the said jacketed cylinder head structures.

2. In an inline internal combustion engine, having a jacketed cylinder structure, longitudinally aligned, non-interconnected jacketed cylinder head structures secured to the cylinder structure, and having coolant outlet ports connected with cylinder coolant inlet ports, a coolant supply system for said engine comprising a liquid coolant manifold extending longitudinally oi the engine and secured above the plane of the top longitudinal face of the cylinder structure and alongside the cylinder head structures, said coolant manifold having a coolant inlet port connected with a source of coolant pressure supply and provided with coolant outlet ports spaced longitudinally thereof and respectively openly connected directly to each of said jacketed cylinder head structures.

3. In an inline internal combustion engine, having a jacketed cylinder structure, longitudinally aligned, non-interconnected jacketed cylinder head structures secured to the cylinder structure, and having coolant outlet ports connected with cylinder coolant inlet ports, a coolant supply system for said engine comprising a liquid coolant manifold extending longitudinally of the engine and secured above the plane of the top longitudinal face of the cylinder structure and alongside the cylinder head structures, said coolant manifold having a coolant inlet port connected with a source of coolant pressure supply and provided with coolant outlet ports spaced longitudinally thereof and respectively openly connected directly to each of said jacketed cylinder head structures, said coolant manifold constructed with a progressively decreasing cross-sectional area from said inlet, whereby to maintain substantially uniform coolant pressure at all said coolant manifold outlets to promote substantially uniform cooling of said cylinder and said cylinder head structures.

4. In an inline internal combustion engine, having a jacketed cylinder structure, longitudinally aligned, non-interconnected jacketed cylinder head structures secured to the cylinder structure, and having coolant outlet ports connected with cylinder coolant inlet ports, a coolant supply system for said engine comprising a liquid coolant manifold extending longitudinally of the engine and secured alongside the cylinder head structures, said coolant manifold having a coolant inlet port connected with a source of coolant pressure supply and provided with coolant outlet ports spaced longitudinally thereof and respectively openly connected directly to each of said jacketed cylinder head structures, said coolant manifold having at least two pair of coolant outlet ports spaced longitudinally of the manifold and each pair of coolant outlet ports openly connected directly to each of the said jacketed cylinder head structures.

5. In an inline internal combustion engine, having a jacketed cylinder structure, longitudially aligned, non-interconnected jacketed cylinder head structures secured to the cylinder structure, and having coolant outlet ports connected with cylinder coolant inlet ports, a coolant supply system for said engine comprising a liquid coolant manifold extending longitudinally of the engine and secured alongside the cylinder head structures, said coolant manifold having a coolant inlet port connected with a source of coolant pressure supply and provided with coolant outlet ports spaced longitudinally thereof and respectively openly connected directly to each of said jacketed cylinder head structures, said coolant manifold having at least two pair of coolant outlet ports spaced longitudinally of the manifold and each pair of coolant outlet ports openly connected directly to each of the said jacketed cylinder head structures, said coolant manifold further provided with a coolant outlet port disposed intermediate the pair of outlet ports most distant from the inlet and serving to conduct a portion only of said coolant supply to an engine accessory.

EARL GINN.

HAROLD LESLIE CASSELMAN. 

